下列不属于共轭酸碱对的是( )A.H 3 O + 和 OH -B.和C.HS -...

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【单选题】

下列不属于共轭酸碱对的是( )

H 3 O + 和 OH -

和

HS - 和 S 2-

NH 3 和

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【单选题】The arrangement of keys on a keyboard, QWERTY reflects the keyboard layout by _______.

representing the phonetics of the alphabets most closely associated with the keyboard

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【单选题】The arrangement of keys on a keyboard, QWERTY reflects the keyboard layout by _______.

representing the phonetics of the alphabets most closely associated with the keyboard

taking the letters of the first six alphabetic characters found on the top row of keys

using the alphabetic characters most frequently used on the keyboard

using the letters of the alphabetic characters that are closest to access while typing

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